iOS (Jailbroken): The ability to send read receipts in iMessages is great if you're talking with someone you actually like, but it's also a disaster if you're trying to avoid someone. SelectiveReading is a jailbreak tweak that allows you to control who sees those receipts.

By default, read receipts are an all or nothing affair. With SelectiveReading, you can pick and choose which contacts get them. So, if you have someone you talk with a lot and want them to have the piece of mind that you received a message you can enable read receipts for them, but turn it off for everyone else. If you're a heavy iMessages user with a love-hate relationship with read receipts, SelectiveReading is worth a look.